Grease gun



sein. 27, 1927. y

J. A. APPLEBY GREASE GUN Filed Maron 2e. 192e Patented Sept. 27,1927.

UNITED STATES PATENT OFFICE.

JAMES AUSTIN APPLEBY, F LONDON, ENGLAND, ASSIGNOB T0 C. C. WAKEFIELD i COMPANY LIMITED, OF LONDON, ENGLAND.

causa GUN.

' Application led March 26, 1926, Serial No.

This invention relates to grease-guns and has for its main object 'to provide means whereby agrease-gun nozzle-piece may be combined and used with a container or camster or drum in which the grease is sold. T he term grease-gun is applied to a device which comprises a grease container so constructed that grease is ejected from the nozzle-piece by pressing the nozzle agalnst'the part to be lubricated, the nozzl'evconstltutlng part of or being associated with a movable plunger or grease-pump by means of which the grease is ejected through the nozzle.l

vThe container, canister or drum which l5 comprises an element of the complete greasegun is that type of receptacle in which the grease is sold and is usually made of thin material such as thin sheet'metal and is preferably formed with a discharge outlet in one wail, preferably in the end wall.

There may be within the container' a sliding false bottom or follower' piston'asshown and described in British patent applcatlon No. 236,015. I According to the present invention there is combined with 'a grease-gun nozzle-piece of the type above "described having means' thereon for engaging it `with a dlscharge outlet aperture in one wall of a grease c on. tainer of the kind specified, a bridge-p1ece carried by or to be attached to the said vnozzle-piece and so arranged, when the noz-v zle-piece is in position, as to bear on the container at a position or positions such that 'the thrust oit the grease-gun nozzle-piece, when in use, is transmitted to and in the direction of the general plane of another wall or of other walls of the container that is or are transverse to that wall in which the outlet is. situated. Preferably the bridge-piece is so formed that when the nozzle engages an outlet in an end wall of the container (tor example. a cylindric `con tainer) the thrust is transmitted tothe side Walls thereof.

In the container to which thepresent in ,vention is particularly applicable ythe crosssectional area of the outlet aperture and of the engaging'means between it and the nozzle-piece is of considerably smaller diameter than that of the end of the ldrum in which the outlet aperture is situated.

Conveniently the bridge-piece takes the 97,621, and in Great Britain Hay 2, 1925.

form of a spider surrounding the nozzlepiece and the free ends of t e arms of said lspider are shaped to engage he rim of the container. The bridge-piece may be adjustable along the length of the nozzle-piece and an adjustable abutment may be provided on said nozzle-piece to engage the bridge-piece in its adjusted position, so that the device can be used with containers having end flanges of different depths.

A preferred construction, embodying an example of the invention, is illustrated in the accompanying drawing, in which:

Figure 1 is a central sectional elevation I of the completeassembled gun;

Figure 2 is a sectional end elevation on vthe line 2-2 of Figure 1, and

Figure 3 is a central sectional'elevation of a portion of a modified form of gun. t

The container 1 in which the gre se is sold has a screw-nip le 2, at one en which is normally closed y a screw-cap or bung and inside the container is' a sliding false bottom or follower piston 3 whichfollows the grease under atmospheric pressure `as it is discharged through the gun, an air vent 4 beingqprovided in the bottom of the container.

t e greasegun nozzle-piece is provided with at'screw-socket 5 to engagethe nipple ,2 and comprises a. barrel Apiece 6 having ports 7 which communicate with the inte- -rior of the container by way 'of the annular space 8. ,The plunger 9 is carried by a tube Al() to the end of which is secured the d-ischarge nozzle 11 and va' passage 12 through the plunger serves as 'the outlet portv froin the barrel and communicates with the aforesaid tube.

is returned under the action of the spring 14 which is housed in the guide member 15. If desired, the ball-valve may operate di.-

A non-return ball-valve 13 servesv to prevent entry of air when the plunger,

lpiece can be used with containers having flanges or rims of different depth, the nut 17 being adjusted along the barrel as required. In the example shown the arms ofthe spider have suitably shaped claws 18 to engage the rim of the container.

In the modification shown in Figure 3 the end of the nozzle-piece is provided with a conical threaded vboss 19 lwhich can be screwed into a plain hole in the end of a container, as shown. ln this case the follower piston 3 may have a central recess 20 toenable it to move to the end of the container.

It will be seen that with the arrangements according to this invention lthe thrust due to the operation of the gun when the nozzle is forced against the part to be lubricated is transmitted tol the side Walls of 'the container and it is thereforevpossible to utilize the comparatively thin Walled containers in which the grease is sold, to form part of the gun itselt as the thin end Wall of the container to which the nozzle-piece is secured is not required to withstand the thrust of the gun.

It will be understood that the end Wall of the container or drum referred to in this specification is wider than the diameter ot' the discharge outlet therein to vvhlch the grease-gun nozzle-piece is attached and the problem of relieving the thin end Wall. of the thrust of the gun in action only arlses with such containers.

I claim 1. Fora grease-gun, the combination with a nozzle-piece of the type necessitating the application to it of end pressure for operating the gun, and means thereon for engaging it with a discharge outlet aperture in one wall of a grease container of the kind specified, of a bridge-piece carried by the said nozzle-piece and so arranged, when the nozzle-piece is in position, as to bear on the container at a position or positions such that the thrust of the nozzle-piece, when in use, is transmitted to andvin the direction of the general plane ot' `another wall of the container that is transverse to that lWall in which the outlet is situated.

2. For a grease-gun the combinationlof a nozzle-piece having means for engagement with a discharge aperture in an end Wall of a rease container wider in diameter than the isoharge aperture and a bridge piece carried by said nozzle-piece and adapted to bear upon the side Wall of the container to relieve the said end Wall ofthe thrust of the grease-gun in operation.

3. For a grease-gun the combination of a nozzle-piece having means for engagement.

With a discharge aperture in one en'd Wall of a grease container being wider in diameter than the discharge a erture, and a bridge-piece in the form oi3 a spider surrounding and carried by the said nozzlepiece, the free ends of the arms of the spider being adapted to engage the side Walls ot' the container to -relieve thesaid end Wall ot' the thrust of the grease gunin operation.

4. For a grease-gun having a nozzle-piece 5. For a grease-gun having a nozzle-piece of the type necessitating the application to it of end pressure for operating the gun l and adapted for use with a grease container having a discharge aperture in one Wall thereof, the {combination with said nozzlepiece of means for engaging the nozzle-piece with said discharge aperture, a bridge-piece axially adjustable on said nozzle-piece and adapted to bear upon the side Wall of the container and means in screw-threaded engagement with the nozzle-piece for maintaining the bridge piece in an adjusted position, in order to relieve the 4said aperture and the Wall in which it is set from the transmission of end thrust applied to the nozzle-piece.

6. For a grease-gun the combination of a nozzle-piece having means for engagement with a discharge aperture in one end Wall of a grease container, having a peripheral rim, and being Wider in diameter-than the discharge aperture, a bridge piece in the form of a' spider surrounding and axially adjustable on the nozzle-piece, the free ends of the spider being adapted to engage the peripheral rim of the container, and an ad justable abutment on said nomine-piece to engage the spider in order to relieve the end wall ol the containerof the thrust of i the grease-gun in operation.

7. For a grease-gun the combination of a nozzle-piece having means for engagement with a discharge aperture in one end Wall ot' a grease container having a peripheral rim, and being Wider in diameter than the discharge aperture, and a bridge-piece in the form of a spider surrounding and carried bythe said nozzle-piece, the free -ends ofthe arms of the spider being adapted to `en,f ,rage the peripheral rim of the container to relieve the said en'd wall of the thrust of the grease-gun 1n operation.

` 8. For a grease-gun the combination of an `externally screw-threaded nozzle-piece having a .screw-socket adapted l.to engage a nipple 1n an end Wall of a grease container,

said end wall having a peripheral rim, a bridge-piece comprising a spider surrounding and axially adjustable on the said nozzlepiece, the free ends of the arms of the 5 spider 'being adapted to engage the peripheral rim of the container and a screwthreaded abutment on said nozzle-piece to engage said spider in order to transmit the thrust of the nozzle-piece in operation to the said peripheral rim whereby the said 10 end Wall is relieved of the thrusta In testimony whereof I afIiX my signature.

JAMES AUSTIN APPLEBY. 

